/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package br.ufjf.pos.controller.action;

import br.ufjf.pos.model.Usuario;
import br.ufjf.pos.model.dao.UsuarioDAO;
import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Pedro
 */
@WebServlet(name = "UsuarioLoginAction", urlPatterns = {"/UsuarioLoginAction"})
public class UsuarioLoginAction extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        
        String login = request.getParameter("login");
        
        HttpSession sessao = request.getSession();
        
        RequestDispatcher rd = request.getRequestDispatcher("index.jsp");

        if (login != null) {
            String senha = request.getParameter("senha");
            try {
                Usuario u = new UsuarioDAO().validaLogin(login, senha);
                if (u == null) {
                    request.setAttribute("page", "usuarioLogin.jsp");
                    request.setAttribute("msg", "Login ou senha incorretos.");
                } else {
                    sessao.setAttribute("usuario", u);
                    request.setAttribute("page", "homeUser.jsp");
                }
            } catch (ClassNotFoundException ex) {
                request.setAttribute("page", "erro.jsp");
                request.setAttribute("msg", "Classe de conexão não encontrada.");
            } catch (SQLException ex) {
                request.setAttribute("pag", "erro.jsp");
                request.setAttribute("msg", "Erro de conexão: " + ex.getMessage());
            }
        } else {
            request.setAttribute("page", "usuarioLogin.jsp");
        }
        
        rd.forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
